Brief Introduction
Almsot all Apps consume data from web services, and therefore must use background threads for these lengthy operations. Even though we provide a black box solution for concurrency in the course, it is important that you understand how concurrency works in iOS. This knowledge is vital to deliver Apps that won't be rejected from the App Store and also provide a great user experience. On top of that, GCD is a frequent topic in iOS job interviews.Course Summary
Learn how to use Grand Central Dispatch (GCD), Apple's solution for running concurrent code on iOS and macOS devices, to improve performance and responsiveness in your apps.Key Learning Points
- Understand the basics of GCD and how to use it for concurrency
- Learn about dispatch queues and how to use them to manage tasks
- Discover how to use GCD for synchronization and communication between threads
Related Topics for further study
Learning Outcomes
- Ability to write concurrent code using GCD
- Improved performance and responsiveness in iOS and macOS apps
- Understanding of thread and task management
Prerequisites or good to have knowledge before taking this course
- Familiarity with Swift programming language
- Basic understanding of iOS or macOS app development
Course Difficulty Level
IntermediateCourse Format
- Online self-paced course
- Video lectures
- Quizzes and exercises
Similar Courses
- Multithreading in iOS
- Concurrency in Swift
Related Education Paths
Notable People in This Field
- Natasha Murashev
- Paul Hudson
Related Books
Description
Learn how to prevent background operations from interfering with an app's UI by implementing Apple's GCD framework.Requirements
- To be successful in this course, you should be comfortable programming in Swift, and understand closures. You can learn these skills in our Swift Syntax course. Familiarity with The Hitchhiker's Guide to the Galaxy and The Matrix are also recommended in order to understand the jokes in this course. See the Technology Requirements for using Udacity.
Knowledge
- Instructor videosLearn by doing exercisesTaught by industry professionals
Outline
- lesson 1 Closures Reloaded Closures in Swift Properties of closures that we bypassed in our Swift Syntax course lesson 2 Grand Central Dispatch Apple's open source library Grand Central Dispatch How GCD allows you to send tasks to the background and (equally important) to the foreground How and what you can send to the background and what must always run in the foreground lesson 3 Sample App Create a simple App that downloads huge images (the easiest way to block the UI) Send this network lengthy task to the background in 2 different ways Run closures in the background Design methods that take a completion closure
Summary of User Reviews
Learn Grand Central Dispatch (GCD) and how to write efficient and high-performance iOS applications. Users have rated this course highly for its practical approach and engaging instructor.Key Aspect Users Liked About This Course
The practical examples and real-world scenarios covered in the course were highly appreciated by users.Pros from User Reviews
- Engaging instructor who makes the course material easy to understand
- Practical examples and real-world scenarios covered in the course
- In-depth coverage of GCD and its use in iOS applications
- Good pacing and structure of the course
- Helpful exercises and quizzes to reinforce learning
Cons from User Reviews
- Some users found the course material too basic
- Limited coverage of advanced topics related to GCD
- Not suitable for users who are already familiar with GCD
- Some users found the course difficult to follow due to lack of clarity in the explanations
- The course could benefit from more hands-on exercises and projects
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